Electrical connector



No. 6l2,|23. v Patented 001.,1893.

F. SCHWEDTMANN. a

ELECTRICAL CONNECTOR.

(Application filed Nov. 11, 1897.)

{No Model.)

1 5 13 1o 17 1 1o Q Flg.6. I 4x .14 21 "l/vitmcooco v am-ve-wlwz I 351flktozmu y 7 A; 5% M UNITED STATES FERDINAND SCHIIVEDTMANN, OF ST.LOUIS, MISSOURI.

ELECTRICAL CON N ECTO R.

SPECIFICATION forming part of Letters Patent No. 612,123, dated October1 1, 1898.

Application filed November 11,1897- Serial No- 658,18 3. (N0 model.)

To all whom, it may concern:

Be it known that I, FERDINAND ScHwEDr- MANN, a citizen of the UnitedStates, residing at the city of St. Louis, in the State of INIIS'.souri, have invented a certain new and usef Lil Electrical Connector, ofwhich the following is such a full, clear, and exact description as willenable any one skilled in the art to which it appertains to make and usethe same, reference being had to the accompanying drawings, forming partof this specification.

The object of my invention is to produce an electrical connector whichwill be simple of construction and eifective and by means of which agood electrical contact, such as is necessary for carrying heavycurrents, can be obtained without careful fitting and truing of theparts.

In the accompanying drawings, which illustrate a connector made inaccordance with my invention, Figure 1 is a side View. Fig. 2 is avertical longitudinal section. Fig. 3 is a side view of a modification.Fig. 4 is a vertical longitudinal section of the modification shown inFig. 3. Fig. 5 is a section on the line 5 5 of Figs. 1 and 3, and Fig. 6is a sectional view showing another modification.

Like marks of reference refer to similar parts in the several views ofthe drawings.

Carried by a suitable support 10, of insulating material, is a rod 11,of brass, copper, or other good conducting material, which forms theinner member of the connector. The end 12 of the rod 11 is rounded, andto the opposite end is secured one end of a flexible conductor 13. Theouter member of the connector consists of a tube 14, preferably of drawncopper, in the end of which are made slits 15, leaving a number oftongues or strips 16. Around the end of the tube 1 1 is placed anannular spring 1'7, preferably formed of coiled-steel wire, which forcesthe strips or tongues 16 firmly against the rod 11. The tube 1 1 isprovided with a handle 18, to which is secured one end of the flexibleconductor 13.

To make the connection between the two ends of the conductor 13, thetube 14 is slipped over the end of the rod 11. The

spring 17 forces the tongues 16 firmly against contact between theparts.

the rod 11 and then makes a good electrical It is not necessary foreither of the parts to be carefully trued or fitted, as the connectorwill make a good electrical contact without this. The pressure betweenthe parts may be varied by using a spring of different-sized wire or byvarying the number of turns of wire in the coil.

In the modification shown in Figs. 3 and 4: there are two of theinsulating-supports 10, in which two tubes 14 are secured in line. Thetubes 14 are provided with slots 15, forming tongues 16, and annularspring 17, as in the above-described form. To each of the tubes 14: issecured a block 19, in which is secured one end of the conductor 13. Theinner member 11 is not connected directly with the conductor 13, but isprovidedwith a handle 20. To make the-connection between the two ends ofthe conductor 13, the rod 11 is passed through the two tubes, so as tomake contact with both.

In the modification shown in Fig. 6 the tube 14: is not slit, as in theabove forms. The in ner member consists of a tube 21, in which areformed slits 22, leaving tongues 23. WVithin the tube 21 is an annularspring 24:, which forces the tongues 23 out against the tube 14.

I am aware that connectors have been made heretofore in which a solidplug is provided with slits, so as to yield to a certain extent asit'entered a cylindrical opening, and do not claim the same.

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent of the United States, is-

1. An electrical connector, consisting of an inner and an outer member,having smooth contact-surfaces, one of said members being tubular andslit along a portion of its length to form a plurality of tongues orstrips, and an annular spring for forcing said tongues or strips againstthe other member, said annular spring having its axis coincident withthe axis of said tubular member.

2. An electrical connector, consisting of an inner cylindrical memberhaving a smooth contact-surface, an outer tubular member slit along aportion of its length to form a my hand and affixed my seal in thepresence plurality of tongues or strips, and an annuof the twosubscribing Witnesses.

lar spring for forcing said tongues or strips Y m T r against said innermember, said annular FERDINMD SGINDDTMAM' Witnesses:

spring having its axis coincident With the axis or said tubular member.J. CLARENCE TAUSSIG,

In testimony whereof I have hereunto set 1 WV. AJALEXANDER.

